Thank you. I feel foolish that wanted to edit a code for that. One more thing – If I show the whole post content and don’t include the more tag, “Read more” button is still there. Since there is nothing more to read (I don’t count comments). I think a condition for “more tag” would be in place.
I can get rid of the line 149 in blog-content.php completely but then I wouldn’t have an option to show the button when the post is too long and I use the more tag.